Suppose the price of e-books is initially $20 but decreases to $15.The absolute value of the percentage change in price (by the midpoint method) is approximately _____%.

A) 28
B) 10
C) 5
D) 15

Frame-of-reference training aims to improve raters' observation techniques and categorization skills.

Goals usually ____ role clarity.

A) decrease
B) increase
C) either increase or decrease
D) have no impact on

If your taxable income was $50,000 and you had an average tax rate of 20 percent,how much tax did you pay?

Which of the following statutes enacted by Congress is also known as the "Refuse Act"?

A) The Marine Protection,Research,and Sanctuaries Act
B) The Safe Drinking Water Act
C) The Clean Water Act
D) The River and Harbor Act